+
+
+
+
Ebiten example - filter
+ +// +build example
+
+package main
+
+import (
+ _ "image/png"
+ "log"
+
+ "github.com/hajimehoshi/ebiten"
+ "github.com/hajimehoshi/ebiten/ebitenutil"
+)
+
+const (
+ screenWidth = 640
+ screenHeight = 480
+)
+
+var (
+ ebitenImage *ebiten.Image
+)
+
+func update(screen *ebiten.Image) error {
+ if ebiten.IsRunningSlowly() {
+ return nil
+ }
+
+ ebitenutil.DebugPrint(screen, "Nearest Filter (default) VS Linear Filter")
+
+ op := &ebiten.DrawImageOptions{}
+ op.GeoM.Scale(4, 4)
+ op.GeoM.Translate(64, 64)
+ // By default, nearest filter is used.
+ screen.DrawImage(ebitenImage, op)
+
+ op = &ebiten.DrawImageOptions{}
+ op.GeoM.Scale(4, 4)
+ op.GeoM.Translate(64, 64+240)
+ // Specify linear filter.
+ op.Filter = ebiten.FilterLinear
+ screen.DrawImage(ebitenImage, op)
+
+ return nil
+}
+
+func main() {
+ var err error
+ // Specifying filter on NewImage(FromImage) is just for backward compatibility.
+ // Now specifying filter at DrawImageOptions is recommended.
+ // Specify FilterDefault here, that means to prefer filter specified at DrawImageOptions.
+ ebitenImage, _, err = ebitenutil.NewImageFromFile("_resources/images/ebiten.png", ebiten.FilterDefault)
+ if err != nil {
+ log.Fatal(err)
+ }
+ if err := ebiten.Run(update, screenWidth, screenHeight, 1, "Filter (Ebiten Demo)"); err != nil {
+ log.Fatal(err)
+ }
+}
+
